CVE-2022-42335

2023-04-2500:00:00

XEN

www.cve.org

cve-2022-42335

x86

shadow paging

hypervisor

pci device

AI Score

7.9

Confidence

High

EPSS

Percentile

14.7%

JSON

x86 shadow paging arbitrary pointer dereference In environments where host assisted address translation is necessary but Hardware Assisted Paging (HAP) is unavailable, Xen will run guests in so called shadow mode. Due to too lax a check in one of the hypervisor routines used for shadow page handling it is possible for a guest with a PCI device passed through to cause the hypervisor to access an arbitrary pointer partially under guest control.

CNA Affected

[
  {
    "vendor": "Xen",
    "product": "xen",
    "versions": [
      {
        "version": "consult Xen advisory XSA-430",
        "status": "unknown"
      }
    ]
  }
]